Gaston de dudzeele



Fatented NW4, 1930 UNITED STATES PA T;O 1;

GASTON DE DUDZEELE, or PARIS, manor; 1

DEVICE FOR TREATING ROUGH [TUBES Ann ANALOGOUS ari'rrcrns'wrrir LEAD: I

' Application filed November 13, 1928, Serial No.'319,176, and in France'No vember 16, 1927. -j

at A and'at the surface of thelead is assumed to be free- .The separator orxdia-M My invention relates to a device for lead treating rough hewn tubes employed in the.

manufacture of tubes.

Lead treating-tubes takes'place by depositingthem, after a suitable chemical treatment, such as by'the process forming the subject of my United States Patent Number 1,548,514, for example, on the surface of a liquid lead bath, previously covered over with a fiux' terior of the tube. I

Several'rough tubes canbe disposed on the I having a salts of zinc base.

-After the rough tube, placed in the center;

of the flux, has been sufficiently heated, it is plungedin the heart of the mass of lead, taking care at the start to'cause theend to descend in the said mass, in such a Way that the air or excess flux, existing on the interior of the rough tube,can become disen gaged by the open extremity and not remain confined on the interior. When the rough tube is entirely covered with lead, it is taken out at a point of the melting pot where the surface of the lead is free, in order that it does not become polluted'with flux. The rough tube therefore floats on the surface of the bath from whence it is easily extracted.

Thedevice forming the object of my invention has for a purpose to establish mechanically, all the operations necessary for assuring a regular and economical lead treating of rough tubes.

The accompanying drawing illustrates, by

way of example, one embodiment of my invention.

' In the drawing-a Fig. 1 is a partial sectional view throughthe device in the longitudinal sense; and

Fig. 2 is a transverse section along the line 22ofFig.l. Y

Referring to'the drawing more in detail, 1'

represents the melting pot, in transverse and longitudinal section. Said melting pot is disposed in an oven containing the hearth destined to assure melting of the lead.

At 2 is shownthe separator or diaphragm, destined to divide the surface of the lead bath into two unequal parts, the larger of which contains the flux and in the smaller of Evhich the metallic bath presents a free surace. I a

In Fig. 2 the flux is assumed to be disposed phragm can be of a single piece or in two" parts, as shown in Fig. 2; vThelower part thereof makes a certain angle with the horizontal corresponding to that which itislnecessary to: give the rough-tube in .the heart of r the lead bath in order to-assure.total liberai: tion of the air or flux'which passeson thein flux side forheating simultaneously andiex- I tracted one after another on the free SUP". faceside.

At .3 is represented a frame .formingfa bridge, which may be made integralor separate with the heating furnace; Said frame is constituted by any suitable construction such as of channel members, tubes and the like. In Figs. 1 and 2, it is illustrated as composed ofchannel members. On said frame is placed ate, a longitudinal arbor resting on suitable bearings and on which are keyedgrooved pulleys, whose num-. ber'will vary in proportion tothe length of the apparatus. Said pulleys are illustrated at" 5.- The diametersthereof are unequal and designed in such a way that'their exterior surface is tangent to the same cone whose apex lies along the arbor l or-a prolongation thereof.

Theangle at'the apex-of the cone is equal to I the angle which thev lower part of; the separator 2 forms with the horizontal." Saidangle is a functionof the maximumlength of the'tubes to be treated. It permits the rough tubes to be given an inclination suchthat all the flux can escape by reason of its difier ent density as compared to the lead.

At 6 are disposed small grooved pulleys whose number corresponds to that of pulleys 5 and whose transverse :vertical plane liesin that of the said pulleys 5. Said pulleys 6 act. as idlers for an endless chain '7 passing around the pulleys 5.and 6.. 1 I

Proper tension is given to said chain by means of tension rollers 8, mounted within a bracket 9, provided atits extremities with a threaded rod 10, allowing for transverse dissaid first named pulleys of decreasing diameters carried by said frame, a chain passing over each pair of said first and second named pulleys, and a finger mounted on each of said chains whereby the articlesto be treated are passed around said diaphragm in inclined position from one of said chambers to the other for the purpose disclosed. v 4:. In a device for treating rough hewn 10 tubes and analogous-articles with lead comprising, in combination, an inclined melting pot, a diaphragm disposed in said melting pot in spaced relation tothe bottom and parallel thereto, a plurality of channel members disposed on said diaphragm, a pulley mounted in each of said'channel members at'equal distances from the bottom of said melting pot, a frame disposed above said melting pot, a shaft disposed in said frame, a pulley of large diameter mounted onsaid shaft opposite the first of said first named pulleys adjaoent the lower end of said melting pot, a pulley for each of the remaining pulleys of said first named pulleys of decreasing diameters carried by said shaft, a chain passing over each pair of said first and second named pulleys, and a finger mounted on each of said chains whereby the articles to be treated are passed around said diaphragm iniinclined position from one of said chambers to the other for the purpose disclosed, a

In testimony whereof I hereunto afiix my signature.

GASTON DE DUDZEELE. 

